GB8702663D0 - Frequency switch - Google Patents

Frequency switch

Info

Publication number: GB8702663D0
Authority: GB; United Kingdom
Prior art keywords: frequency switch; switch; frequency
Prior art date: 1986-03-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

GB878702663A

Other versions

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

ZF Friedrichshafen AG

Original Assignee

Fichtel and Sachs AG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1986-03-29

Filing date

1987-02-06

Publication date

1987-03-11

1987-02-06 Application filed by Fichtel and Sachs AG filed Critical Fichtel and Sachs AG

1987-03-11 Publication of GB8702663D0 publication Critical patent/GB8702663D0/en

1987-09-30 Publication of GB2188500A publication Critical patent/GB2188500A/en

1990-04-04 Application granted granted Critical

1990-04-04 Publication of GB2188500B publication Critical patent/GB2188500B/en

2007-02-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)

Landscapes

Physics & Mathematics (AREA)
Nonlinear Science (AREA)
General Physics & Mathematics (AREA)
Manipulation Of Pulses (AREA)
Pulse Circuits (AREA)
Electronic Switches (AREA)
Dc-Dc Converters (AREA)

GB8702663A 1986-03-29 1987-02-06 Pulse frequency responsive switch Expired - Lifetime GB2188500B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19863610605 DE3610605A1 (en)	1986-03-29	1986-03-29	FREQUENCY SWITCH

Publications (3)

Publication Number	Publication Date
GB8702663D0 true GB8702663D0 (en)	1987-03-11
GB2188500A GB2188500A (en)	1987-09-30
GB2188500B GB2188500B (en)	1990-04-04

Family

ID=6297506

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8702663A Expired - Lifetime GB2188500B (en)	1986-03-29	1987-02-06	Pulse frequency responsive switch

Country Status (7)

Country	Link
US (1)	US4746820A (en)
JP (1)	JPS62238469A (en)
DE (1)	DE3610605A1 (en)
FR (1)	FR2596871A1 (en)
GB (1)	GB2188500B (en)
IT (1)	IT1208353B (en)
SE (1)	SE464598B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4845379A (en) *	1988-07-05	1989-07-04	International Business Machines Corporation	Sense circuit for detecting absence of a pulse train
DE3910620A1 (en) *	1989-04-01	1990-10-04	Hagenuk Telecom Gmbh	CIRCUIT ARRANGEMENT FOR DETECTING A SIGNAL FREQUENCY
US5446322A (en) *	1992-05-01	1995-08-29	Analog Devices, Inc.	Apparatus and method for determining when the frequency of an alternating signal is below a predetermined threshold
SE470527B (en) *	1992-11-18	1994-07-04	Ericsson Telefon Ab L M	Method and apparatus for detecting whether or not a signal has a desired predetermined frequency
US7116139B2 (en) *	2002-09-13	2006-10-03	Texas Instruments Incorporated	Apparatus and method for controlling operation of a processor device during startup
CN1848683B (en) *	2005-04-15	2010-05-05	鸿富锦精密工业（深圳）有限公司	Trianglar-wave generator and pulse-width modulation signal generating circuit containing the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB978045A (en) *	1960-04-01	1964-12-16	Emi Ltd	Improvements in or relating to electrical control circuits
GB1196551A (en) *	1968-02-01	1970-07-01	Quest Automation Sales Ltd	Improvements in or relating to Monitoring and Control Systems
GB1182027A (en) *	1968-06-12	1970-02-25	Rolls Royce	Improvements in or relating to tachometer circuits
DE2203320A1 (en) *	1972-01-25	1973-08-02	Daimler Benz Ag	DEVICE FOR THE FORMATION AND PROCESSING OF SPEED SIGNALS IN VEHICLES
US3852675A (en) *	1972-10-11	1974-12-03	Itt	Tone detection and switching circuit
US3886420A (en) *	1973-09-10	1975-05-27	Gen Signal Corp	Frequency responsive speed control apparatus
GB1452757A (en) *	1973-12-03	1976-10-13	Texas Instruments Ltd	Frequency responsive circuit
GB1457294A (en) *	1974-01-05	1976-12-01	Ferranti Ltd	Pulse-frequency sensitive switching circuit arrangements felx
US3943382A (en) *	1974-12-23	1976-03-09	Sperry Rand Corporation	Frequency operated switch
JPS55109968A (en) *	1979-02-16	1980-08-23	Nissan Motor Co Ltd	Frequency decision circuit
US4454434A (en) *	1979-12-03	1984-06-12	Phillips Petroleum Company	Calibration and status monitor comparator apparatus and method
US4327323A (en) *	1979-12-03	1982-04-27	Phillips Petroleum Company	Comparator apparatus and process

1986
- 1986-03-29 DE DE19863610605 patent/DE3610605A1/en not_active Ceased
1987
- 1987-02-06 GB GB8702663A patent/GB2188500B/en not_active Expired - Lifetime
- 1987-02-09 US US07/012,293 patent/US4746820A/en not_active Expired - Fee Related
- 1987-03-05 SE SE8700928A patent/SE464598B/en not_active IP Right Cessation
- 1987-03-23 FR FR8704427A patent/FR2596871A1/en active Pending
- 1987-03-27 IT IT8767240A patent/IT1208353B/en active
- 1987-03-30 JP JP62074585A patent/JPS62238469A/en active Pending

Also Published As

Publication number	Publication date
FR2596871A1 (en)	1987-10-09
US4746820A (en)	1988-05-24
SE464598B (en)	1991-05-13
IT1208353B (en)	1989-06-12
SE8700928L (en)	1987-09-30
DE3610605A1 (en)	1987-10-01
SE8700928D0 (en)	1987-03-05
GB2188500A (en)	1987-09-30
GB2188500B (en)	1990-04-04
JPS62238469A (en)	1987-10-19
IT8767240A0 (en)	1987-03-27

Publication	Publication Date	Title
EP0234193A3 (en)	1988-08-24	Switch arrangement
GB8717221D0 (en)	1987-08-26	Frequency synthesizer
EP0272938A3 (en)	1990-03-07	Frequency synthesizer
GB8602288D0 (en)	1986-03-05	Relegendable pushbutton switches
GB8627430D0 (en)	1986-12-17	Frequency synthesizer
GB8622882D0 (en)	1986-10-29	Switch construction
GB8714560D0 (en)	1987-07-29	Switch
EP0270286A3 (en)	1990-01-17	Alarm switch
GB8612668D0 (en)	1986-07-02	Electronic time switch
EP0248677A3 (en)	1989-08-30	Switchgear
EP0235552A3 (en)	1989-04-26	Switch arrangement
GB2206000B (en)	1991-10-30	Rf switch
GB2211999B (en)	1991-12-18	Switch
SG23592G (en)	1992-05-15	Radio frequency switch
GB8702663D0 (en)	1987-03-11	Frequency switch
GB8516315D0 (en)	1985-07-31	High frequency switching
ZA887734B (en)	1989-07-26	Switch
GB8620079D0 (en)	1986-10-01	Switch
GB8709158D0 (en)	1987-05-20	High frequency switch
EP0249324A3 (en)	1990-02-21	High-power switch
GB8719806D0 (en)	1987-09-30	Switches
GB8601296D0 (en)	1986-02-26	Electrical switch
GB2209434B (en)	1991-11-27	Switches
GB2198911B (en)	1990-11-21	Space switch
GB8610696D0 (en)	1986-06-04	Switch

Legal Events

Date	Code	Title	Description
1992-09-30	PCNP	Patent ceased through non-payment of renewal fee